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New Data Demonstrate Accuracy of Veracyte’s Whole-Genome Sequencing-Based MRD Testing Platform for Muscle-Invasive Bladder Cancer

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Findings from TOMBOLA Trial Were Presented at EAU25

SOUTH SAN FRANCISCO, Calif., March 25, 2025--(BUSINESS WIRE)--Veracyte, Inc. (Nasdaq: VCYT), a leading cancer diagnostics company, today announced new data showing that its whole-genome sequencing (WGS)-based platform for minimal residual disease (MRD) testing detected cancer in patients treated for muscle-invasive bladder cancer (MIBC) with more accuracy than ddPCR-based blood testing and earlier compared to standard imaging. The findings, from the large, independent, multicenter, interventional TOMBOLA trial (NCT04138628), were shared in an oral presentation at the 40th Annual European Association of Urology Congress (EAU25) in Madrid by Iver Nordentoft, Ph.D., Aarhus University (Abstract A0162: "Comparison of ctDNA detection methods for monitoring minimal residual disease in patients with bladder cancer: Insights from the TOMBOLA Trial").

The new study involved 100 patients enrolled in the TOMBOLA trial who had MIBC and were undergoing standard-of-care neoadjuvant chemotherapy (NAC) and radical cystectomy (RC). Their blood samples were evaluated for circulating tumor DNA (ctDNA) using both ddPCR-based and Veracyte’s WGS-based MRD testing platform to detect disease recurrence. Patients also underwent imaging. At the 6-month milestone, in comparison to ddPCR, the Veracyte MRD testing platform had an equivalent and outstanding negative predictive value (95.9% Veracyte MRD vs. 96.2% ddPCR) for cancer recurrence, while having a higher specificity (88% Veracyte MRD vs. 62% ddPCR). Longer follow-up is required to determine the clinical impact of these results. The findings also showed that the Veracyte MRD testing platform detected cancer recurrence a median of 93 days sooner than imaging. In the ongoing trial, ctDNA-positive patients are treated with immunotherapy and followed for clinical response.

"Up to half of patients with muscle-invasive bladder cancer experience recurrence within two years of initial treatment, and using ctDNA status to guide oncological treatment would spare some patients from unnecessary treatments," said Lars Dyrskjøt Andersen, Ph.D., professor in the Department of Clinical Medicine and Department of Molecular Medicine at Aarhus University in Denmark and principal investigator of the TOMBOLA trial. "ctDNA testing using ddPCR has demonstrated promise for MRD detection, but it has inherent limitations that may impede its clinical use, particularly on a large scale. Our findings show that Veracyte’s whole-genome sequencing approach to MRD testing demonstrates high accuracy and may improve overall clinical utility, compared to ddPCR."